Summary
Already 466 million people worldwide have debilitating hearing loss, up from 360 million in 2010 and the figure is expected to nearly double to 900 million, or one in every 10 people by 2050, the World Health Organization said.
The WHO is urging manufacturers and regulators to ensure smartphones and other audio players have software that can ensure people do not listen to too loud music for too long.
The WHO is also looking at volume levels in places such as nightclubs and sporting arenas.
...